Hi,

To answer Thierry: I do remember your feedbacks from Burkina from a few
years ago. I was actually planning to bring live USB keys, the only reason
I didn't is because I didn't have the time to setup all those keys before
leaving. I'm still curious on how you do this: do you buy a bunch of keys
before and then give them to the students? Do you you require them to bring
their own USB key?

Also, have you ever tried this on Windows 8? Because I know from past
experience that the boot is very different and Windows8 is very reluctant
on booting on anything else than itself.

As to install Linux on their machine, it would have taken too much of my
time and energy. Our goal was to sort out most technical issues on the
first day (which we did), and then, leave the rest of the week for math and
experimentation. As I said, it wasn't Sage days per say but really a school
with lectures and all.

To answer Dominique: "when you go teaching in far away places" --> It was
actually my first time doing such a thing. And I have very little
experience on setting up a sage cloud, so I didn't want to use this week to
experiment on this... Also, it was complicated for me to bring any
material, I'm quite on a long trip here involving different conferences,
continents and also holidays: my bags are quite full already. The only
thing I bring with me is my very light (but powerful) laptop. And last but
not least: with this solution, they have a working Sage during the week but
nothing to bring back home (and even nothing for homework in the evening).
The VM, despite its limitation, is still a program that they can keep
using. And I know they will.

Anyway, I have no doubt that for now Thierry's solutions are probably the
best. Also, the VM were not too bad and, in our case, it mostly did the
work. But still, it would be nice to work toward a better Windows interface
that doesn't require to install Linux at all (on USB key, partition or
whatever). Especially when ones wants to be a teacher for the week and not
a sys adm...

Best

Viviane

2015-07-18 9:02 GMT+03:00 Dominique Laurain <dominique.laurai...@orange.fr>:

> Interesting feedbacks for SAGE,maths,teaching,using VM... but I have  a
> question :
>
> when you go teaching in far away places, why you don't go with a small
> equipement for a local area network (switch, Ethernet wires) ?
>
> because after installing the network, you can use your computer (for
> example Ubuntu OS) with a sage cloud, and all students only need an
> internet browser
>
> no need Internet, no need VM, ...
>
> If no need for sharing files, you have USB live SAGE too....
>
> PS: at my job, I was told that VM working better on same native OS,
>
>
> On Friday, 17 July 2015 20:00:49 UTC+2, Viviane Pons wrote:
>>
>> Dear all,
>>
>> this last week, I was giving a class in a summer school in Uganda, along
>> with Jennifer Balakrishnan, on experimental mathematics (mine was
>> combinatorics and Jennifer's was number theory). Both classes were based on
>> Sage. Let me give you a feedback on using Sage here.
>>
>> Conditions;
>>
>> - around 30 students
>> - limited Internet: the university network was much too slow for us to
>> work with, we were given a special network bought for the school but the
>> data was limited (we had to buy extra data a few times during the week)
>> - every student had his / her own laptop. Only PCs, most of them Windows,
>> 2 or 3 linux (Ubuntu)
>> - most students had very limited computer skills
>>
>> Because of the Internet limitation, SMC was no good solution for everyone
>> to use. We still used it to do some demos, share code, and also as a backup
>> options for the students who couldn't get Sage running.
>>
>> Sage installation:
>>
>> Most of the students didn't have Sage installed, so the first afternoon
>> was devoted to install Sage everywhere. It mostly worked but we sometimes
>> had issues:
>> * hard drive limitations: some hard drive were completely full and VM +
>> Sage was too big to get installed (also their HD was often partitioned in
>> weird ways and the program partition was full)
>> * for some reason, the Sage VM takes forever to load on Windows 8 (which
>> makes it seem broken)
>>
>> Using Sage on the VM:
>>
>> Never had so much Sage on Windows experience before, this was a good test
>> and now here's everything that was wrong and annoying:
>>
>> * Once a Sage virtual machine was in "saved" mode, it would usually crash
>> on re-openning and we had to discard the saved mode (I guess because their
>> computers were running out of memory)
>>
>> * Sharing files between the VM and Windows was NOT straightforward at
>> all, the Sage explanation were not working (I think you need to change the
>> usergroup in Ubuntu or something like this), at the end I just dropped the
>> idea as I could not do it on all 30 machines at once
>>
>> * And I didn't manage to make them download any notebooks either, because
>> the notebook wouldn't take https addresses, so actually I had no way to
>> share notebooks with them!! (except on SMC)
>>
>> * pdflatex wasn't installed by default which for me was a real problem as
>> I use it a lot to print combinatorial objects (thank you Jean-Baptiste for
>> the ascii art on binary trees, it saved me a bit!). And because of internet
>> limitations and the lack of Ubuntu knowledge from my students, it was not
>> really possible to install it on all their machines (I mean the VM)
>>
>> * I couldn't get the VM to show multiple windows and not even multiple
>> tabs. This was so annoying... Sometimes a student would click on a link on
>> a notebook and there was no way of going back to where it was before... Or
>> to open Internet on the VM to download the notebooks or something...
>>
>> To finish, one very good thing that we need to keep: the Help link on the
>> notebook was great, the students were navigating on the different tutorials
>> and this worked very well.
>>
>> Anyway, this list is here to remind us what we could do better. I don't
>> mean to push anybody but now that we'll have full time developers, I
>> figured this real life experience was very useful for us non-Windows-users
>> to have (at the end, what's the point of having open source softwares if
>> the people who really need it can't use it properly?)
>>
>> Also I want to say that despite all of this, the school went really well.
>> The students were really happy to learn about Sage, they were the most
>> enthusiastic and motivated students I ever had. Both Jennifer and I were
>> able to do great mathematics and we had a wonderful time!
>>
>> If ever you're interested, my class material on combinatorics is here:
>>
>> https://www.lri.fr/~pons/en/eaump.php
>>
>> and the whole summer school material (including the previous week) is
>> there:
>>
>> http://people.bath.ac.uk/masgks/EAUMP/
>>
>> Best,
>>
>> Viviane
>>
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